Forget international exchange. What about different currencies for different job categories world wide?
I propose that maintenance/repair is the top dollar without it nothing works and the living standard drops.Second would be building, construction and food production. Next probably ,in my mind,
would be management whether social, policing and care. Getting near the bottom would be entertainment and betting on the value of money.
So, as a precis, a maintenance dollar is worth 50 entertainment dollars. Human nature would eventually set the exchange rates.
Maybe I have the categories a bit aschew but hopefully you can see the drift of the idea inkling. Any suggestions welcome.
Possibly there could be the the top dollar of the pristine natural world dollar.